Strange FP2 Mainboard Defect: Do you have a clue? Can you repair it?

[Alex.A]

@nuiun

With the new motherboard all parts work again. Charging and data transfer are working.

@nuiun

To make things clear: this thread is mainly for curiosity. And secondly it is my last effort to save the old motherboard which was originally part of my FP2.

Ok, thanks for mentioning. I had misunderstood and thought you were having problems with your new motherboard as well.

What happens if you press very hard on the spot where the connectors are? Perhaps the pogo pins on the motherboard connecting to the bottom module are somehow broken. You could try the oven method:

Noisy coloured pixels on my Fairphone 2

Edit by @moderators: This post contains instructions that can cause severe harm to you. So welcome in the club of broken pogo pins I am lucky that I only have trouble with these pins at work. There is one thing you could try before you swap your core module. It is a dangerous action, but if you do not have anything to loose it is worth a try. I guess you have (a) broken solder joint(s) on the pogo pin(s). Resoldering by hand would be hard, moreover most people do n…

Though I have absolutely no idea whether this will or can help, and out of experience I can tell you it may also completely kill the motherboard.
Perhaps by heating the pins in an alternative way you could get the same result.